Can someone help me with these physics problems

Can someone help me with these physics problems



1. Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. In a typical strike, the chameleon's tongue accelerates at a remarkable 240 m/s2 for 20 ms, then travels at constant speed for another 30 ms.
Part A
During this total time of 50 ms, 1/20 of a second, how far does the tongue reach?
Express your answer to two significant figures and include the appropriate units.

2. A car is traveling at a steady 90 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.7 m/s2 .
Part A
How much time elapses before the motorcycle is moving as fast as the car?
Express your answer to two significant figures and include the appropriate units.
Part B
How far is the motorcycle from the car when it reaches this speed?
Express your answer to two significant figures and include the appropriate units.

3. When jumping, a flea rapidly extends its legs, reaching a takeoff speed of 1.0 m/s over a distance of 0.50 mm .
Part A
What is the flea's acceleration as it extends its legs?
Express your answer to two significant figures and include the appropriate units.

4. When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.9 m/s in 0.15 s .
Part B
How far does the pike move during this strike?
Express your answer using two significant figures.





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